it's up to us own a continual basis as mr. van roekel pointed out, all software goes through continuous improvement. what we are doing right now is continually improving our software on an ongoing baycy, identifying vulnerabilities that exist. >> any other witness, mr. chao? >> what i would like to say, if i come across as being defensive i apologize, but i am being defensive not in terms of me, i am being defensive in terms of the truth. and i believe that that's what this committee is trying to get to. in fact, i think that's what you said in the beginning. so when i detect that there is distortions or misuse or unrevealed things about that i spend nine hours with your staff basically being deposed, i am going to be defensive because that is not the truth. that's all i want to make clear bout my defensiveness. >> any other witness? this committee has many talents and broad investigative jurisdiction. to my knowledge, and i could be wrong because my colleagues have many talents, to my knowledge none of us could do a website o